Coating machine for flexible sheet materials



June 14, 1949. J, ETTL 2,473,243

COATING MACHINE FOR FLEXIBLE SHEET MATERIALS Filed July 3, 1946 3Sheets-Sheet 1 1:= (g l l l i f JOSEPH ETTL INVENTOR.

BYMW

ATTORNEY June 14, 1949. J. ETTL 2,473,243

comma mcamm FOR FLEXIBLE swam MATERIALS I Filed July 3, 1946 sSheds-Sheet '2 S m I il a Q I I V I r 'a & 4 ll m g 4 c4 s|- 5 l ll I 5I i Z I e= i 1 5 N a: I.

I i l g I i i r s V [3 v 1! ST-F m JOSEPH ETTL A T TORNE Y June 14,1949. J. ETTL 2,473,243

COATING MACHINE FOR FLEXIBLE SHEET MATERIALS Filed July 5, 1946 3Sheets-Sheet 3 JOSEPH ETTL INVENTOR.

/ BY W 0:

ATTORNEY.

Patented June 14, 1949 COATING MACHINE FOR FLEXIBLE SHEET MATERIALSJoseph Ettl, Brooklyn, N. Y., assignor to Rogers Industries, Inc., NewYork, N. Y., a corporation- Application July 3, 1946, Serial No..681,376

6 Claims. (01. 91-50) This invention relates to a gluing or stripcoating machine and an object of this invention is to provide a machinewhich will efficiently apply an adhesive to vellum, cardboard, sheets ofpaper, etc.

an excess deposit of glue on the opposite side of the material beingcoated. This excess glue spoiled the material and necessitated theentire stoppage of the machine to clean the feed rollers.

In the mechanism herewith disclosed, only a single adjustment isrequired. This single adjustment provides a safety feature, theprevention of depositing excess adhesive onto the feed rollers. Thecoating roller is made to move from both the supply roller and the feedrollers simultaneously when an increased or decreased amount of adhesiveis required on the coating roller.

Furthermore, in practice it has been proven that the amount of adhesivedeposited on the coating roller depends upon the distance between thesupply roller and the coating roller, andthat when the amount ofadhesive on the coating roller is increased, that the surface of thecoating deposited upon the coating roller increases in roughness of thesurface of the adhesive.

In other words, heavy ridges are formed in the coating surface,depending upon the consistency of the adhesive, the said ridges beinghigher than the normal adjustment of the coating would ordinarilyindicate.

In order tocompensate for this unevenness of the coating surface, I havepositioned the axis of the supply roller at a sixty degree angle belowthe horizontal line passing through the axis of the coating roller and Ihave positioned the median line between the feed rollers at a thirtydegree angle above the said horizonta1 line.

This arrangement of the roller positions causes a greater opening to beformed between the feed rollers and the coating roller than thempeningbetween the coating roller and the supply roller for an equal amount ofhorizontal movement of the coating roller to or from the set position ofth supply roller.

With the above and other objects in view, the invention will behereinafter more particularly described, and the combination andarrangement of parts will be shown in the accompanying drawings andpointed out in the claims which form part of this specification.

Reference will now be had to the drawings, wherein like numerals ofreference designate corresponding parts throughout the several views, inwhich:

Figure 1 is a side elevation of my improved coating machine.

Figure 2 is a cross-sectional view, the section being taken as on line2--2 in Figure 1.

Figure 3 is an enlarged assembly view of a fragmentary portion of themachine showing a preferred arrangement of the relative positions of thecoating roller, supply roller, feed rollers and coating adjustmentmeans. a

. In the illustrated embodiment of the invention, the numeral l0indicates a gluing or coating machine comprising a receptacle ll havingupright side walls l2.

Rotatably mounted in the walls l2 in sealed bearings I3 is an adhesivepick-up roller .or supply roller I 4. The sealed construction of thebearings I3 makes it possible to mount the bearings below the level ofthe adhesive and fully immersed in the adhesive, and to mount the supplyroller M with about four-fifths of its diameter immersed in theadhesive.

The side walls l2 also provide bearings fora,

coating roller l5 carried by a shaft IS. The shaft I6 is rotatablymounted in rectangular guide blocks I! which are slidably mounted inguideways l8. Theguideways extend through the side walls l2 so as toform openings for the shaft l6.

Each side wall l2 also provides a rectangular guideway 20 which is inangular relation with each of the guideways l8. A bar 2| is secured tothe wall l2 by screws 22 and covers each guideway 20.

A carrier 23 is slidably mounted in each guideway 20 and providesbearings for material feed rollers 25. Fixed in the carrier 23 by a pin26 is a threaded member 21 which passes outwardly through an aperture inthe bar 2 I. A coil spring 28 is mounted on-the threaded member 21intermediate the carrier 23 and the bar 2| and urges the feed rollers indirection of the coating roller l5.

A threaded nut 29 on the member 21. serves for moving the feed rollersin a direction away from the coating roller. After adjusting the feedrollers 25 they remain set during operation of the in the direction ofthe supply roller i4 and the feed rollers 25.

Rotatably mounted in the side walls I! is an adjustment rod 31 having athreaded end portion 38.

An adjusting dial 39 is secured to the rod 3'! by a pin 40. The dial 38is calibrated as shown at H.

- A pointer 42 is secured to a side wall I2 of the receptacle ii andextends in overlapping relation with the dial 38 and indicates the setposition of the dial. A nut 43 threaded on the end portion 38 serves tolock the dial 39 in set position. It is to be noted that the hub of thedial has a slot M through which the pin 40 passes outwardly. The slot 44extends through the hub and provides clearance space for movement of thepin therein. As best shown in Fig. 3, the adjustment rod 31 has cammeans 45 formed near each end of the rod by eccentrically turning outportions thereof in alinement with the walls I2. Cam blocks 46 areslidably mounted in an extension 30' of the aperture 30. 'The cam blocks46 are in alineme t with the cam means 45. Adjusting screws are threadedin the cam blocks 45 at one end and-in engagement with the slidableblocks II at the opposite end.

Each screw 41 has apertures 48 in which an elongated pin may be insertedfor adjusting the screw with relation to a cam block 46. It will thus beseen that the springs urge the bearing blocks I! and the coating rolleri5 in directionof the supply roller 14 and the feed rollers 25, wherebya single adjustment of the coating roller 15 causes movement of thecoating roller l5 to or from both the supply roller i4 and the feedrollers 25 simultaneously. I

I provide a heating chamber 50 for oil below the supply roller H forheating the supply roller. For the purpose of effectively circulatingthe oil in the heating chamber 50, I provide a shaft 5| havingright-hand and left-hand rotors 52. The

pinion gear which meshes with a gear 56 driven by a, motor (not shown).The gear is secured to the supply roller shaft 51. Secured to the shafti6 is a gear 58 which meshes with pinion gears I8 secured to reduced endportions of the feed rollers 25. Rotation of the ear 56 causes rotationof all the gears and the rollers actuated thereby.

It is to be noted that the axes of the supply roller i4 and the feedingrollers 25 are positioned on the same side of a vertical plane passingthrough the axis of the coating roller l5.

In accordance with the patent statutes, I have described and illustratedthe preferred embodiment of my invention, but it will be understood thatvarious changes and modifications can be made therein without departingfrom the spirit of the invention 'as defined by the appended claims.

I claim:

1. In a gluing or coating machine, the combinain said adhesive, acoating roller rotatabiy mounted in bearings above the level of adhesivein said receptacle, said coating roller being parallel to the axis ofsaid supply roller, the lower face of said coating roller being abovethe upper surface of said adhesive, said coating roller being slidablymounted for movement to and from said supply roller while being out ofcontact with said adhesive, lockable dial adjustment means for movementof said coating roller, material feed rollers positioned above thehorizontal center line of said coating roller and being movable relativeto said coating roller, said feed rollers being in set position duringoperation of said machine, whereby a single adjustment of said coatingroller causes movement of said coating roller to or from both saidsupply roller and said feed rollers simultaneously, the axes of saidsupply roller and said feeding rollers being positioned on the same sideof a vertical plane passing through the axis of said coating roller.

2. In a gluing or coating machine, the combination with a receptacle foradhesive, a supply roller rotatably mounted in said receptacle with thebearings thereof sealed while immersed in said adhesive, a coatingroller rotatably mounted above the level of said adhesive, the lowerface of said coating roller being above the upper surface of saidadhesive, said coating roller being slidably mounted for movement to andfromlsaid supply roller while parallel to the axis of said supply rollerand out of contact with said adhesive, ma-' terial feed rollers movableto set position relative to said coating roller, the axis of saidcoating roller being positioned horizontally, the plane in which theaxis of said supply roller is positioned passes through the axis of saidcoating roller and makes an angle with and below a horizontal planepassing through the axis of said coating roller, the median line betweensaid feed rollers being positioned at a smaller angle above saidhorizontal plane, a coating adjustment rod having cam means for saidparallel movement of said coating roller, whereby a single adjustment ofsaid coating roller causes movement of said coating roller from bothsaid supply roller and said feed rollers simultaneously, the openingbetween said coating roller and said feed rollers being greater than theopening between said coating roller and said feed rollers, the axes ofsaid supply roller and said feeding rollers being positioned on the sameside of a vertical plane passing through the axis of said coatingroller.

3. In a gluing or coating machine, the combination with a receptacle foradhesive, a supply roller rotatably mounted in said receptacle with thesupporting bearings thereof sealed while immersed in said adhesive, acoating roller rotatably tion with a receptacle for adhesive, a supplyroller mounted in bearings above the level of adhesive in saidreceptacle, said coating roller being parallel to the axis of saidsupply roller, the lower face of said coating roller being above theupper surface of said adhesive, said coating roller being slidablymounted for movement to andfrom said supply roller while being out ofcontact with said adhesive, lockable dial adjustment means for movementof said coating roller, material feed rollers positioned above thehorizontal center line of said coating roller and being movable relativeto said coating roller, said feed rollers being in set position duringoperation of said machine, said machine having side walls, guideways in.said side walls, bearing blocks for said coating roller slidable in saidguideways, spring means urging said bearing blocks and said coatingroller in direction of said supply roller and said feed rollers, acoacting adjustment rod having cam meansfor said parallel movement ofsaid coating roller, cam blocks, adjusting screws threaded in said camblocks at one end and being in engagement with said slidable blocks atthe opposite end, whereby a single adjustment of said coating rollercauses movement of said coating roller to or from both said supplyroller and said feed rollers simultaneously, the axes of said supplyroller and said feeding rollers being positioned on the same side of avertical plane passing through the axis of said coating roller.

4. In a gluing or coating machine, the combination with a receptacle foradhesive, a supply roller rotatably mounted in said receptacle with thebearings thereof sealed while immersed in said adhesive, a coatingroller rotatably mounted above the level of said adhesive, saidcoatingroller being parallel to said supply roller, the lower face of saidcoating roller being above the upper surface of said adhesive, saidcoating roller being slidably mounted for movement to and from saidsupply roller while parallel to the axis of said supply roller and outof contact with said adhesive, lockl able adjustment means for movementof said coating roller, material feed rollers movable relative to saidcoating roller, the axis of said coating roller being positioned in ahorizontal plane, the axis of said supply roller being positioned in aplane lying at a sixty degree angle below said horizontal plane andpassing through the axis of said coating roller, the median line betweensaid feed rollers being positioned in a plane lying at a thirty degreeangle with said plane and passing through the axis of said coatingroller, whereby a single adjustment of said coating roller causesmovement of said coating roller from both said supply roller and saidfeed rollers simultaneously, the opening between said coating roller andsaid feed rollers being greater than the openin between said coatingroller and said feed rollers, the axes of said supply roller and saidfeeding rollers being positioned on the same side of a vertical planepassing through the axis of said coating roller.

5. In a gluing or coating machine, the combination with a receptacle foradhesive, a supply and passing through the axis of said coating roller,the median line between said feed rollers being positioned in a planelying at a smaller angle with said plane and passing through the axis ofsaid roller rotatably mounted in said receptacle with roller rotatablymounted in said receptacle with the bearings thereof sealed whileimmersed in said adhesive, a coating roller rotatably mounted above thelevel of said adhesive, the lower face of said coating roller beingabove the upper surface of said adhesive, said coating roller beingslidably mounted for movement to and from said supply roller whileparallel to the axis of said supply roller and out of contact with saidadhesive, lockable adjustment means for movement of said coating roller,material feed rollers, settable relative to said coating roller, theaxis of said coating roller being positioned in a horizontal plane, theaxis of said supply roller being positioned in a plane lying at an anglebelow said horizontal plane the bearings thereof sealed while immersedin said adhesive, a coating roller rotatably mounted above the level ofsaid adhesive, the lower face of said coating roller being above theupper surface of said adhesive, said coating roller being slidablymounted for movement to and from said supply roller while parallel tothe axis of said supply roller and out of contact with said adhesive,lockable adjustment means for movement of said coating roller, materialfeed rollers, settable relative to said coating roller, the axis of saidcoating roller'being positioned in a horizontal plane, the axis of saidsupply roller being positioned in a plane lying at an angle below saidhorizontal plane and passing through the axis of said coating roller,the median line between said feed rollers being positioned in a planelying at a smaller angle with said plane and passing through the axis ofsaid coating roller, wherebya single adjustment of said coating rollercauses movement of said coating roller from both said supply roller andsaid feed rollers simultaneously, the opening between said coatingroller and said feed rollers being greater than the opening between saidcoating roller and said feed rollers, an oil heating chamber below saidadhesive supply roller for heating said roller, and means forcirculating heating oil in said heating chamber, said means comprisingrotatable spaced-apart impellers causing motion of said oil from themid-portion of said chamber towards the end thereof, the axes of saidsupply roller and said feeding rollers being positioned on the same sideof a vertical plane passing through the axis of said coating roller.

JOSEPH E'I'I'L.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

